Question

at what position and object is to be placed in front of a convex lens and concave mirror so that the nature of the images will be the same in both the cases

Answer 1

in both the cases when the object is placed at minus infinity then the image is formed as really and point image on the focus

Answer 2

If object is placed at C, at F, between F and P, between C and F, beyond C

Actually in all the cases the nature of images obtained in both will be same........